CR’s take. This beef could have benefits. The limited research completed to date suggests that steak and hamburger from grass-fed cattle may contain less total fat per serving, according to a review by the nonprofit Union of Concerned Scientists. Grass-fed steak can also have higher levels of omega-3 fatty acids, which may help reduce heart-disease risk. Grass-fed ground beef usually has more conjugated linoleic acid, which might improve the immune system and help fight cancer, atherosclerosis, and type 2 diabetes, lab and animal studies show. And raising cattle on well-managed pastures can lessen erosion and boost soil fertility, the scientists’ group found.

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